TrailBlazer 4WD L6-4.2L VIN S (2002)
2.
Install the transfer case in the vehicle.
3.
Install the transfer case mounting nuts. Tighten the nuts to 47 Nm (35 lb ft).
4.
Remove the transmission jack stand.
5.
Install the transfer case speed sensors electrical connectors.
6.
Install the vent hose.
7.
Install the motor/encoder electrical connector.
8.
Install the transfer case harness to the transfer case.
9.
Install the transfer case wiring harness to the retainers.
10.
Install the fuel lines to the retainer.
11.
Install the rear propeller shaft.
^
Install the propeller shaft into the transfer case.
^
Install the propeller shaft to the rear axle pinion yoke. Align the reference marks made during removal.
^
Install the yoke retainers and the bolts. Tighten the bolts to 20 Nm (15 lb ft).
12.
Install the front propeller shaft.
^
Install the propeller shaft to the transfer case.
^
Install the propeller shaft to the front axle pinion yoke. Align the reference marks made during removal.
^
Install the yoke retainers and the bolts. Tighten the bolts to 20 Nm (15 lb ft).
13.
Install the fuel tank shield.
14.
Install the fuel tank shield retaining bolts. Tighten the bolts to 25 Nm (18 lb ft).
15.
Lower the vehicle and continue with Active Transfer Case Control Module reprogramming.
Active Transfer Case Control Module Reprogramming
1.
Reprogram the transfer case control module with calibration P/N 12575794.
A.
Connect the scan tool to the vehicle.
B.
Power-up the scan tool and select the Service Programming feature.
C.
Select the appropriate vehicle.
D.
Press the Request Info button on the scan tool.
E.
Connect the scan tool to the computer station.
F.
Follow the menu select items for reprogramming and provide information as to what device you are programming and whether you are
reprogramming or replacing the electronic control unit (ECU).
G.
Select "vehicle" from the selection menu.
H.
Select "ATC Active Transfer Case Module" to program.
I.
Select "Normal" for Programming Type.
J.
Select the applicable software calibrations.
